data://

data:// — Données (RFC 2397)

Description

L'enveloppe de flux data: (» RFC 2397).

Utilisation

data://text/plain;base64,

Options

**Résumé de l'enveloppe**
Attribut	Supporté
Restreint par allow_url_fopen	Oui
Restreint par allow_url_include	Oui
Autorise la lecture	Oui
Autorise l'écriture	Non
Autorise l'ajout	Non
Autorise la lecture et l'écriture simultanément	Non
Support de la fonction stat()	Non
Support de la fonction unlink()	Non
Support de la fonction rename()	Non
Support de la fonction mkdir()	Non
Support de la fonction rmdir()	Non

Exemples

Exemple #1 Affichage d'un contenu data://

<?php
// Affiche "I love PHP"
echo file_get_contents('data://text/plain;base64,SSBsb3ZlIFBIUAo=');
?>

Exemple #2 Récupération du type de média

<?php
$fp   = fopen('data://text/plain;base64,', 'r');
$meta = stream_get_meta_data($fp);

// Affiche "text/plain"
echo $meta['mediatype'];
?>

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User Contributed Notes 3 notes

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from dot php dot net at brainbox dot cz ¶

14 years ago

When passing plain string without base64 encoding, do not forget to pass the string through URLENCODE(), because PHP automatically urldecodes all entities inside passed string (and therefore all + get lost, all % entities will be converted to the corresponding characters).



In this case, PHP is strictly compilant with the RFC 2397. Section 3 states that passes data should be either in base64 encoding or urlencoded.



VALID USAGE:

<?php

$fp = fopen('data:text/plain,'.urlencode($data), 'rb'); // urlencoded data

$fp = fopen('data:text/plain;base64,'.base64_encode($data), 'rb'); // base64 encoded data

?>



Demonstration of invalid usage:

<?php

$data = 'Günther says: 1+1 is 2, 10%40 is 20.';



$fp = fopen('data:text/plain,'.$data, 'rb'); // INVALID, never do this

echo stream_get_contents($fp);

// Günther says: 1 1 is 2, 10@ is 20. // ERROR



$fp = fopen('data:text/plain,'.urlencode($data), 'rb'); // urlencoded data

echo stream_get_contents($fp);

// Günther says: 1+1 is 2, 10%40 is 20. // OK



// Valid option 1: base64 encoded data

$fp = fopen('data:text/plain;base64,'.base64_encode($data), 'rb'); // base64 encoded data

echo stream_get_contents($fp);

// Günther says: 1+1 is 2, 10%40 is 20. // OK

?>

down

admin deskbitz net ¶

14 years ago

If you want to create a gd-image directly out of a sql-database-field you might want to use:



<?php

$jpegimage = imagecreatefromjpeg("data://image/jpeg;base64," . base64_encode($sql_result_array['imagedata']));

?>



this goes also for gif, png, etc using the correct "imagecreatefrom$$$"-function and mime-type.

down

sandaimespaceman at gmail dot com ¶

16 years ago

Now PHP supports data: protocol w/out "//" like data:text/plain, not data://text/plain,

I tried it.

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